Extrinsic 26677-1

{
  "heartbeat": {
    "blockNumber": 26676,
    "sessionIndex": 444,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x7e244d0b4dd4f6511635f71f3e5036fa9546a4cb9453bede5adf6e5a6320cc33b816aeeaba182044ece437035e26b59b1aa3a8b25ed5776d2550f5efd12a818a"
}